Year	years
1960	52.609
1961	53.203
1962	53.785
1963	54.128
1964	54.924
1965	55.266
1966	56.038
1967	56.669
1968	57.273
1969	57.894
1970	58.524
1971	59.16
1972	59.795
1973	60.424
1974	61.041
1975	61.641
1976	62.216
1977	62.757
1978	63.259
1979	63.02
1980	64.118
1981	64.484
1982	64.863
1983	65.269
1984	65.749
1985	66.333
1986	67.027
1987	67.782
1988	68.544
1989	69.265
1990	69.901
1991	70.427
1992	70.854
1993	71.194
1994	71.477
1995	71.685
1996	71.85
1997	72.004
1998	71.979
1999	72.246
2000	72.377
2001	72.519
2002	72.694
2003	72.784
2004	72.805
2005	73.407
2006	73.86
2007	74.281
2008	74.832
2009	75.276
2010	75.66
2011	75.856
2012	76.166
2013	76.322
2014	76.396
2015	76.377
2016	76.304
2017	76.319
2018	76.499
2019	76.965
2020	76.914
2021	76.291
2022	77.536